Bluetooth Padlock works with bluetooth enabled IOS and Android devices. Once the app is installed on your phone it will pair with the padlock. A password can be created and password can be shared with others. Once you let them know your password they can install the app on their phone and use the same padlock. You don't need to be there. This is a great feature for shared lockers and storages. Manual and automatic lock modes. Attractive modern look. Battery lifetime: 1-2 years. Battery Type: 2 x CR2032 (included) Works with IOS 7 and up.